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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include <QCoreApplication>
void examples()
{
QPushButton *myPushButton;
{
//! [21]
qApp->setStyleSheet("QPushButton { color: white }");
//! [21]
}
{
//! [22]
myPushButton->setStyleSheet("* { color: blue }");
//! [22]
}
{
//! [23]
myPushButton->setStyleSheet("color: blue");
//! [23]
}
{
//! [24]
qApp->setStyleSheet("QGroupBox { color: red; } ");
//! [24]
}
{
//! [25]
qApp->setStyleSheet("QGroupBox, QGroupBox * { color: red; }");
//! [25]
}
}
//! [26]
class MyPushButton : public QPushButton {
// ...
};
// ...
void someFunction()
{
qApp->setStyleSheet("MyPushButton { background: yellow; }");
//...
//! [26]
}
//! [27]
namespace ns {
class MyPushButton : public QPushButton {
// ...
};
}
// ...
void someMethod()
{
qApp->setStyleSheet("ns--MyPushButton { background: yellow; }");
//...
//! [27]
}
class CustomWidget : public QWidget
{
Q_OBJECT
public:
void wrap();
void paintEvent(QPaintEvent *event) override;
private:
QWidget *myDialog;
QWidget *nameEdit;
};
//! [32]
void CustomWidget::paintEvent(QPaintEvent *)
{
QStyleOption opt;
opt.initFrom(this);
QPainter p(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}
//! [32]
void CustomWidget::wrap()
{
{
//! [88]
qApp->setStyleSheet("QLineEdit { background-color: yellow }");
//! [88]
}
{
//! [89]
myDialog->setStyleSheet("QLineEdit { background-color: yellow }");
//! [89]
}
{
//! [90]
myDialog->setStyleSheet("QLineEdit#nameEdit { background-color: yellow }");
//! [90]
}
{
//! [91]
nameEdit->setStyleSheet("background-color: yellow");
//! [91]
}
{
//! [92]
nameEdit->setStyleSheet("color: blue; background-color: yellow");
//! [92]
}
{
//! [93]
nameEdit->setStyleSheet("color: blue;"
"background-color: yellow;"
"selection-color: yellow;"
"selection-background-color: blue;");
//! [93]
}
{
//! [95]
QLineEdit *nameEdit = new QLineEdit(this);
nameEdit->setProperty("mandatoryField", true);
QLineEdit *emailEdit = new QLineEdit(this);
emailEdit->setProperty("mandatoryField", true);
QSpinBox *ageSpinBox = new QSpinBox(this);
ageSpinBox->setProperty("mandatoryField", true);
//! [95]
}
{
//! [96]
QCoreApplication::setAttribute(Qt::AA_UseStyleSheetPropagationInWidgetStyles, true);
//! [96]
}
}